Improvement in pearl barley mills



u. s. murmur.

PEARL BARLEY MILL.

Patentd Nov. 30,1875.

NZPETERS, PHOTO-UTHOGRAPHER WASHINGTON D C UNITED STATES PATENT QFFICE.

HENRY S. NORTHRUP, OF QUASQUETON, IOWA.

IMPROVEMENT lN PEARL BARLEY MILLS.

Specification forming part of Letters Patent No. 170.638, dated November30, 1875; application filed July 31, 1875.

To all whom it may concern:

Be it known that I, HENRY S. NORTHRUP, of Quasqueton, in the county ofBuchanan and State of Iowa, have invented a new and Improved PearlBarley Mill, of which the following is a specification:

In the accompanying drawing, Figure 1 represents a side elevation of myimproved mill for hulling and pearling barley and wheat. Fig. 2 is avertical transverse section of the same on the line 0 c, Fig. l; andFigs. 3 and 4 are, respectively, a detail section on the line a; m, Fig.4, and a side view of the slotted sheet-iron forming the casing of themill.

Similar letters of reference indicate corresponding parts.

The invention will first be fully described in connection with drawing,and then pointed out in the claim.

In the drawing, A represents the case of the pearl barley mill, which ismade of cylindrical shape, and supported in stationary position onradial side frames. The stationary case A is made of sheet'iron,provided at the sides and circumference with slots at, ofsuitahlelength, that are punched from the outside toward the inside, soas to form raised convex edges, which hold the barley from be ingcarried around, while the slots allow the hulls to pass out. The wheator barley to be pearled passes to the inside of easing A, near the eyeorshaft of the revolving grindstone B, being conducted by side channels0, with supply-regulating slides G, from the hopper D at the top. Thechannels feed a continuous supply of barley to the casing, and keep thesame packed full all the time, so that the stone may always act on auniform quantity of barley, avoiding thereby the getting loose of thesame in the case, and the increasing of the speed of the stone, whichforms an objectionable feature in the old way of pearling, as the endsof the grain are ground off before the sides are white, causing therebyconsiderable waste. The stationary case has a spout, A, withregulating-slide at the center of the bottom, through which the barleypasses out slow or fast, according to the positions of the regulatingslide-pieces.

As the partially-hulled barley passes outit is subjected to asuction-blast, and carried up by an elevator to another hopper above themill, from which it is let into the mill again. As soon as the wholequantity has passed through the same it is then again exposed to theaction of the mill, and passed up and down again until completely hulledand pearled.

The stationary case allows a greater quantity to be operated upon thanthe revolving case, while it renders also the construction of the millless complicated, and its Working more effective.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The combination of hopper D, having side channels 0G, and stationary case A, having slots, raised edges, and bottom outlet,with the vertical grinder B, as and for the purpose specified.

HENRY SMITH NORTHRUP.

Witnesses:

J OHN NEWELL, Hrnrrr OoRnELL.

